List: TOCFL 6

stupid, foolish, silly, naive

1. strength, physical power
2. energy, vigour

1. raw material, ingredient
2. source material

1. consequence, result, outcome
2. aftermath

1. transmit, spread, infect
2. contagious, infectious

1. package, wrap
2. packaging

letter of the alphabet

1. circle, ring
2. to encircle, surround
3. pen, enclosure (for animals)

1. extend, prolong, lengthen
2. extension, overtime

building, architecture, construction